window.onload = function() {
	var oUl = document.getElementById('ul1');
	// alert(oUl);
	// console.log(oUl);
	oUl.lastElementChild.style.backgroundColor = 'red';
	oUl.children[0].nextElementSibling.style.backgroundColor = 'blue';
	oUl.children[0].nextElementSibling.previousElementSibling.style.backgroundColor = 'yellow';

};
